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REDARC Smart Start Sbi 12V 100A

$165.00
SKU: RDAC-SBI12

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REDARC Smart Start SBI12 12V 100A Battery Isolator

Protect your starting battery while keeping your auxiliary battery charged with the REDARC Smart Start® SBI12. This 12V, 100A microprocessor-controlled battery isolator automatically manages power between your starting and auxiliary batteries, making it an ideal solution for dual battery systems in 4WDs, overland vehicles, work trucks, RVs, and marine applications.

The SBI12 operates as a solenoid priority system, automatically isolating the start battery from auxiliary loads once the engine is switched off. This ensures your vehicle always retains enough power to start while allowing your secondary battery to safely power refrigerators, lighting, compressors, communications equipment, and other accessories.

Featuring REDARC's proven power-saving technology, the SBI12 minimizes high-voltage transients while delivering reliable operation under demanding conditions. Its intelligent fault detection system continuously monitors system performance, providing LED indication of voltage drops, over-voltage conditions, and excessive current draw.

100A Continuous Rating • Microprocessor Controlled • Automatic Battery Isolation • Power Saving Technology • Fully Surge Protected


Key Features

  • 100A Continuous Rating: Designed for heavy-duty dual battery applications.
  • Automatic Battery Isolation: Protects the start battery from excessive discharge.
  • Microprocessor Controlled: Intelligent battery management for reliable operation.
  • Power Saving Technology: Reduces high-voltage transients generated by the solenoid.
  • Fault Detection: LED indication alerts users to over-voltage, voltage drop, and excessive current conditions.
  • Fully Surge Protected: Built-in surge protection enhances system reliability.
  • Silver Contact Design: Long-life contacts suitable for demanding automotive and marine environments.
  • Compact Overmold Housing: Durable design allows for quick and straightforward installation.

Why It Performs

  • Protects Your Starting Battery: Prevents auxiliary accessories from draining the battery needed to start your vehicle.
  • Automatically Charges Both Batteries: Manages charging while driving without driver intervention.
  • Outperforms Diode Isolators: Eliminates the voltage drop commonly associated with diode-based battery isolators.
  • Built for Harsh Conditions: Proven reliable in demanding off-road, commercial, and marine environments.
  • Supports Heavy Electrical Loads: Ideal for powering fridges, lighting, compressors, and other auxiliary equipment.
  • Maintenance-Free Operation: Automatically manages your dual battery system every time you drive.

Technical Specifications

  • Brand: REDARC
  • Model: SBI12
  • Product: Smart Start Battery Isolator
  • System Voltage: 12 Volt
  • Continuous Current Rating: 100 Amps
  • Control Type: Microprocessor Controlled
  • Battery Management: Automatic Battery Isolation
  • Protection Features:
    • Surge Protection
    • Fault Detection
    • Over-Voltage Protection
    • Voltage Drop Monitoring
    • Excessive Current Detection
  • Housing: Overmold Construction
  • Contact Material: Silver Contacts
  • Application: Automotive & Marine

What's Included

  • (1) REDARC Smart Start SBI12 12V 100A Battery Isolator

Important Installation Note: The SBI12 is designed for 12V dual battery systems. Proper cable sizing, circuit protection, and installation practices are essential for safe and reliable operation.


Ideal For

  • 4WD Vehicles
  • Overland Builds
  • Touring Vehicles
  • Work Trucks
  • Commercial Vehicles
  • Dual Battery Systems
  • RV Electrical Systems
  • Marine Applications
  • Camping Power Systems
  • Auxiliary Battery Installations

Why Choose the REDARC Smart Start SBI12?

  • Automatically protects your start battery from excessive discharge.
  • 100A continuous current rating handles demanding dual battery systems.
  • Microprocessor-controlled operation delivers intelligent battery management.
  • Power-saving technology minimizes voltage transients for reliable operation.
  • Silver contacts provide long service life in automotive and marine environments.
  • Designed and manufactured by REDARC for dependable long-term performance.

Why Buy from Expedition Superstore?

  • Authorized REDARC Dealer: Shop genuine REDARC battery isolators, DC-DC chargers, battery management systems, and electrical accessories backed by experienced overland specialists.
  • Complete Dual Battery Solutions: Find battery chargers, isolators, wiring kits, batteries, solar equipment, and installation accessories all in one place.
  • Expert Technical Support: Our team can help you choose the ideal REDARC dual battery components for your vehicle and adventure setup.
  • Free Shipping: Enjoy free shipping on qualifying orders over $349 so you can spend less on freight and more on your next adventure.
  • Need help designing your dual battery system? — Schedule your build chat today!

REDARC Smart Start SBI12 12V 100A Battery Isolator

Protect your starting battery while keeping your auxiliary battery charged with the REDARC Smart Start® SBI12. This 12V, 100A microprocessor-controlled battery isolator automatically manages power between your starting and auxiliary batteries, making it an ideal solution for dual battery systems in 4WDs, overland vehicles, work trucks, RVs, and marine applications.

The SBI12 operates as a solenoid priority system, automatically isolating the start battery from auxiliary loads once the engine is switched off. This ensures your vehicle always retains enough power to start while allowing your secondary battery to safely power refrigerators, lighting, compressors, communications equipment, and other accessories.

Featuring REDARC's proven power-saving technology, the SBI12 minimizes high-voltage transients while delivering reliable operation under demanding conditions. Its intelligent fault detection system continuously monitors system performance, providing LED indication of voltage drops, over-voltage conditions, and excessive current draw.

100A Continuous Rating • Microprocessor Controlled • Automatic Battery Isolation • Power Saving Technology • Fully Surge Protected


Key Features

  • 100A Continuous Rating: Designed for heavy-duty dual battery applications.
  • Automatic Battery Isolation: Protects the start battery from excessive discharge.
  • Microprocessor Controlled: Intelligent battery management for reliable operation.
  • Power Saving Technology: Reduces high-voltage transients generated by the solenoid.
  • Fault Detection: LED indication alerts users to over-voltage, voltage drop, and excessive current conditions.
  • Fully Surge Protected: Built-in surge protection enhances system reliability.
  • Silver Contact Design: Long-life contacts suitable for demanding automotive and marine environments.
  • Compact Overmold Housing: Durable design allows for quick and straightforward installation.

Why It Performs

  • Protects Your Starting Battery: Prevents auxiliary accessories from draining the battery needed to start your vehicle.
  • Automatically Charges Both Batteries: Manages charging while driving without driver intervention.
  • Outperforms Diode Isolators: Eliminates the voltage drop commonly associated with diode-based battery isolators.
  • Built for Harsh Conditions: Proven reliable in demanding off-road, commercial, and marine environments.
  • Supports Heavy Electrical Loads: Ideal for powering fridges, lighting, compressors, and other auxiliary equipment.
  • Maintenance-Free Operation: Automatically manages your dual battery system every time you drive.

Technical Specifications

  • Brand: REDARC
  • Model: SBI12
  • Product: Smart Start Battery Isolator
  • System Voltage: 12 Volt
  • Continuous Current Rating: 100 Amps
  • Control Type: Microprocessor Controlled
  • Battery Management: Automatic Battery Isolation
  • Protection Features:
    • Surge Protection
    • Fault Detection
    • Over-Voltage Protection
    • Voltage Drop Monitoring
    • Excessive Current Detection
  • Housing: Overmold Construction
  • Contact Material: Silver Contacts
  • Application: Automotive & Marine

What's Included

  • (1) REDARC Smart Start SBI12 12V 100A Battery Isolator

Important Installation Note: The SBI12 is designed for 12V dual battery systems. Proper cable sizing, circuit protection, and installation practices are essential for safe and reliable operation.


Ideal For

  • 4WD Vehicles
  • Overland Builds
  • Touring Vehicles
  • Work Trucks
  • Commercial Vehicles
  • Dual Battery Systems
  • RV Electrical Systems
  • Marine Applications
  • Camping Power Systems
  • Auxiliary Battery Installations

Why Choose the REDARC Smart Start SBI12?

  • Automatically protects your start battery from excessive discharge.
  • 100A continuous current rating handles demanding dual battery systems.
  • Microprocessor-controlled operation delivers intelligent battery management.
  • Power-saving technology minimizes voltage transients for reliable operation.
  • Silver contacts provide long service life in automotive and marine environments.
  • Designed and manufactured by REDARC for dependable long-term performance.

Why Buy from Expedition Superstore?

  • Authorized REDARC Dealer: Shop genuine REDARC battery isolators, DC-DC chargers, battery management systems, and electrical accessories backed by experienced overland specialists.
  • Complete Dual Battery Solutions: Find battery chargers, isolators, wiring kits, batteries, solar equipment, and installation accessories all in one place.
  • Expert Technical Support: Our team can help you choose the ideal REDARC dual battery components for your vehicle and adventure setup.
  • Free Shipping: Enjoy free shipping on qualifying orders over $349 so you can spend less on freight and more on your next adventure.
  • Need help designing your dual battery system? — Schedule your build chat today!